Light pipe prototype testing

Omishore, Ayodeji

doi:10.15199/48.2018.04.27

Cited by 4 publications

(5 citation statements)

References 13 publications

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“…Thus, the collection of daylight data is crucial to be considered in designing buildings using daylight [1,12]. The quality and quantity of external illuminance in a particular location is always considered primarily in many previous studies [12][13][14][15][16][17][18]. The location for external illuminance data collection for this study is at Campus Pauh Putra, Universiti Malaysia Perlis (latitude, 6.458575° and longitude, 100.346311°) to validate the capacity and pattern for northern region of Malaysia's climate.…”

Section: Potential Of Daylighting System In Malaysiamentioning

confidence: 99%

“…The main aim of this paper is to focus on designing an optimum light pipe based on the efficiency of geometry and its' aspect ratio. The design of light pipe structure plays an important role in daylighting system as the reflected light that emitted from the light pipe to the diffuser can transform a dark space into space that is bright and full of natural light [14][15][16]. The recommended light intensity for offices, classes, libraries, show rooms and laboratories is 200 ~ 500 lux [12,13,17].…”

Section: Introductionmentioning

confidence: 99%

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Efficiency Analysis of a Passive Daylighting System Based on Northern Malaysia’s Climate

Mohd Sani Mohamad Hashim,

Muhammad Amin Zulkifli Din,

Abdul Halim Ismail

et al. 2024

ARASET

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Daylighting design strategy is important in order to have adequate lighting source in a room and necessary to decrease energy consumption for artificial lighting. Passive daylighting system utilizes daylight by collecting, reflecting and diffusing the natural light throughout a given area. The purpose for this study is to monitor, compare and analyse an optimum light pipe system design that can scatter daylight into a room based on three case studies. Lighting analysis was conducted using Autodesk 3ds Max Design software throughout the project based on the actual geographical parameters of Universiti Malaysia Perlis, Malaysia and also using the real sun azimuth on working hours. The results were compared according to the respective designs in order to observe the maximum internal illuminance and the average internal illuminance. The results show that the straight geometry with low aspect ratio produces the highest interior light intensity among other light pipe systems and the average internal illuminance values in the room was able to reach the minimum requirement of a small room which is 200 – 500 lux.

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Section: Potential Of Daylighting System In Malaysiamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Efficiency Analysis of a Passive Daylighting System Based on Northern Malaysia’s Climate

Mohd Sani Mohamad Hashim,

Muhammad Amin Zulkifli Din,

Abdul Halim Ismail

et al. 2024

ARASET

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show abstract

“…The reflectivity of the light pipe is typically between 85 and 94%, and it is composed of a highly reflective material such as aluminum or silver. The light pipe daylighting system consists of a light collector, a light pipe, and a luminaire to capture sunlight from the top roof and transport it to the entire building, as shown in Figure 1a,b [41,42,80,81]. To avoid glare and overheating, the amount of light entering the room is carefully adjusted.…”

Section: Light Pipementioning

confidence: 99%

Analysis and Comparison of Daylighting Technologies: Light Pipe, Optical Fiber, and Heliostat

2023

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This article analyzes and compares three daylighting technologies: light pipes, optical fibers, and heliostats. This work aims to evaluate their efficiency, sustainability, and cost-effectiveness in providing natural light to indoor spaces. The analysis includes a review of the principles behind each technology, the design and development of the prototypes and experiments carried out by our research team, their advantages and disadvantages, and their applications in different settings. The comparison is based on several criteria, such as installation, cost, efficiency, output spectrum, and hybrid system. The results indicate that each technology has its unique features and is suited to specific applications. Light pipes are effective for short distances, and they can be easily integrated into existing buildings. Optical fibers are suitable for long distances and offer flexibility in design, but they require more maintenance. Heliostats are ideal for large spaces, but they are expensive to install and operate. Overall, this study provides valuable insight into the strengths and weaknesses of three daylighting technologies and helps designers and architects make informed decisions when selecting the most appropriate solution for future work.

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“…The design of light pipes has a great influence on the indoor lighting effect. In addition to the internal materials, the light incident angle, the length of the light pipe and the turning angle and direction will all affect the performance of the light pipe [7], [8]. In this paper, the length of the light pipe and the incident direction of light are quantitatively analyzed, and the Monte Carlo ray-tracing method is used for simulation.…”

Section: Introductionmentioning

confidence: 99%

Research on Optimizing Transmission Efficiency and Illumination Distribution of Tubular Daylighting System

Huang

2022

J. Phys.: Conf. Ser.

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Although building lighting is paid more and more attention now, due to the limited areas illuminated by typical lighting, such as windows and skylights, especially the lack of sunlight irradiance and uneven distribution of sunlight often occur deep inside the room. The light pipe can effectively solve this kind of problem and transmit sunlight directly to the room. The light pipe with the inner diameter of 250mm was fixed, and the working efficiency of light pipes with different shapes and sizes was simulated by computer with illumination angles of 15, 45 and 90. Through simulation, it is found that the illumination angles of light pipes with different shapes and sizes are different at the maximum efficiency. It can match the suitable regional environment according to shape and size characteristics, meet daily office needs, and reduce the assistance of artificial lighting during the day, thus reducing the use of artificial lighting in buildings during the day and reducing the daily power consumption.

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Light pipe prototype testing

Cited by 4 publications

References 13 publications

Efficiency Analysis of a Passive Daylighting System Based on Northern Malaysia’s Climate

Efficiency Analysis of a Passive Daylighting System Based on Northern Malaysia’s Climate

Analysis and Comparison of Daylighting Technologies: Light Pipe, Optical Fiber, and Heliostat

Research on Optimizing Transmission Efficiency and Illumination Distribution of Tubular Daylighting System

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